EP0581826A1 - Lavatory cleansing blocks. - Google Patents
Lavatory cleansing blocks.Info
- Publication number
- EP0581826A1 EP0581826A1 EP92909120A EP92909120A EP0581826A1 EP 0581826 A1 EP0581826 A1 EP 0581826A1 EP 92909120 A EP92909120 A EP 92909120A EP 92909120 A EP92909120 A EP 92909120A EP 0581826 A1 EP0581826 A1 EP 0581826A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- blocks
- component
- sodium
- surface active
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
- A61L9/05—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating specially adapted to be released by contact with a liquid, e.g. for toilets
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0056—Lavatory cleansing blocks
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/395—Bleaching agents
- C11D3/3955—Organic bleaching agents
Definitions
- This invention is concerned with improvements in and relating to lavatory cleansing blocks.
- the present invention is concerned with solid lavatory cleansing blocks intended to be brought into contact with the flush water of a lavatory or urinal whereby a part of the block is dissolved in the flush water to release active ingredients thereto for cleaning the lavatory or urinal.
- the blocks are immersed in the water cistern of a lavatory or urinal, either as a free-standing block or may be placed or contained in a dispensing device., to be sited in a lavatory cistern.
- the invention is also concerned with lavatory cleansing blocks for intermittent contact with the flush water of a lavatory or urinal, e. g. , a so-called "rim block" for placing in a container to be held under the rim of a lavatory.
- halogen release agent that is a compound which on contact with water releases hypohalous acid and/or hypohalite ions to the water, since these are powerful sanitising and cleansing agents. In principle, there would appear to be no problem in combining these two classes of ingredient in a single block.
- halogen release agents are, by their nature, powerful chemically reactive species, serving as halogenating or oxidising agents.
- halogen release agents tend to react with surface active materials and/or (ii) tend, when moistened, to evolve gas thereby losing their activity and, in many cases, destroying the physical integrity of the cleansing block.
- halogen release agents may attack component parts of lavatories, urinals or their cisterns.
- a particularly useful class of chlorine release agents comprises the N-chlorinated cyanuric acid derivatives such as sodium di ⁇ hloroisocyanurate and trichlorisocyanuric acid.
- N-chlorinated cyanuric acid derivatives such as sodium di ⁇ hloroisocyanurate and trichlorisocyanuric acid.
- a solid lavatory cleansing block formed of a composition
- a composition comprising (A) from 5 to 80, preferably from 10 to 70%, by weight of a surface active component comprising one or more anionic surface active agents; (B) from 10 to 75, preferably from 15 to 60% by weight of a ' chlorine release agent component consisting of one or more chlorinated cyanuric acid derivative chlorine release agents; and (C) from 2 to 25%, preferably from 3 to 20%, by weight of a solubility control agent (as hereinafter defined); the composition containing not more than 20% by weight of water-soluble inorganic salts introduced with the anionic surface active agent(s) and containing no added fillers as diluents.
- Suitable anionic surface active agents for use in the blocks of the invention include alkali metal, typical sodium, paraffin sulphonates; alkali metal alkyl sulphates and alkali metal alkyl aryl sulphonates, especially alkali metal benzene sulphonates.
- alkali metal alkyl sulphates and alkali metal alkyl aryl sulphonates especially alkali metal benzene sulphonates.
- a typical example is sodium dodecyl benzene sulphonate which is a readily available material of commerce.
- the anionic surface active component of the block forms from 5 to 80% by weight of the composition, preferably from 10 to 70 % by weight thereof, most preferably from 25 to 65 % by weight thereof, and especially from 40 to 60% by weight thereof.
- the chlorine release component of the block is an N-chlorinated cyanuric acid derivative, such as sodium dichloroiso ⁇ yanurate or trichloroiso ⁇ yanuric acid, especially the former.
- the chlorine release component is present in the blocks of the invention in an amount of from 10 to 75% by weight, preferably from 15 to 70 % by weight, more preferably from 20 to 50 % by weight, and especially from 30 to 40% by weight.
- the third component of the block is a solubility control agent, that is, a compound of lower solubility than the anionic surface active component and which assists in controlling the rate of dissolution of the block.
- the solubility control agent may be virtually wholly insoluble in water or if, as discussed below a nonionic surface active agent, have a low HLB, e. g. 5 or less. Such agents should be resistant to attack by the chlorine release component, both in the composition and in aqueous solutions produced by dissolution of the composition in use. It is a matter of simple experiment to determine whether any candidate is so resistant. .
- the solubility control agent should be a saturated organic material or a highly chlorinated organic material. Examples of solubility agents which may be employed include polyethylene waxes; fatty alcohols; fatty acids; low ethoxylates (e. g. containing up to 4 ethylene oxide units per mole) of fatty alcohols and alkylphenols; paradichlorobenzene; and difficultly hydrolysable esters such as methyl salicylate and isoborhyl acetate.
- the solubility control agent should form from 2 to 25% of the weight of the block, more preferably from 3 to 20%, more preferably from ' 5 to 15% and especially 6 to 12% thereof.
- the ethoxylated fatty alcohols and alkyl phenols also possess surface active properties and thus may contribute to the overall cleansing effect of a composition containing them.
- other nonionic surfactants may be present.
- the blocks of the invention must not contain more than 20% by weight of inert water-soluble salts, such as sodium sulphate, present as impurities introduced with the anionic surface active agent which is preferably not more than 75% and especially less than 10% by weight thereof.
- anionic surface active agents often contain appreciable amounts of filler or diluent, such as sodium sulphate or sodium phosphate, and such commercially available materials may be used in formulating blocks in accordance with the invention to provided that in so doing too much salt is not introduced.
- substantially no additional (e. g. less than 1% by weight) water-soluble or other filler should be introduced, e. g. , sodium sulphate, sodium carbonate, sodium tripolyphosphate, sodium bicarbonate,sodium metasilicate, sodium sesquicarbonate, sodium chloride, clays, calcite or the like.
- any other ingredient present in the composition of the invention should be resistant to attack by the chlorine release agent.
- most dyestuffs commonly employed in lavatory cleansing blocks to impart a pleasant colouration to the flush water are not sufficiently resistant to the chlorine release agents with the results that (a) the dyestuffs are decolourised or discoloured to an unpleasant colour and (b) available halogen, which would otherwise serve as a sanitizing agent, is lost.
- Acid Blue 7 may be adequately resistant.
- Lavatory cleansing blocks commonly contain a germicide or preservative but this is not generally necessary in the case of the blocks of the invention since they already contain powerful germicides, namely the halogen release agents.
- a free standing lavatory cleansing block suitably has a weight of from 20 to 150 gms, preferably from 30 to 100 gms).
- the mixture to be extruded should contain up to 15% by weight, of a liquid component or a solid component which is liquefied under extrusion conditions to act as a processing aid.
- a liquid solubility control agent such as a lower ethoxylated alcohol or alkyl phenol; a higher alcohol, chlorinated hydrocarbon or mineral oil.
- the invention also provides a method of cleansing a lavatory by intacting the flush water thereof with a block in accordance with the invention.
- Blocks having the formulations shown in Table 1 were produced by extruding the mixture and cutting into blocks, having a weight of about 65 gm.
- each block was tested in a lavatory cistern by subjecting it, to a total of 17 flushes per day. The life of each block was calculated by counting the total number of flushes which it survived. As will be seen, the blocks in accordance with the invention (Examples 1, 2 and 3) had significantly greater life than those not in accordance with the invention (Examples 4-11).
- Marlon A 890 is a trade name of Huls Aktiengesellschaft. Contains approx 90% dodecylbenzene sulphate sodium salt, the balance being mainly sodium sulphate
- Nansa HS80SGPF is a trade mark of Albright and Wilson Ltd. Contains approx 80% dodecylbenzene sulphonate sodium salt, the balance being mainly magnesium sulphate and sodium sulphate.
- Ficlor is a trade name of Fisons pl ⁇ Common chemical name sodium di ⁇ hloroiso ⁇ yanurate dihydrate.
- Dobanol 91 is a trade name of Shell Chemicals. It is a distillation of C g to C. . primary alcohols contains approximately C g alcohol (17.25%), C 10 alcohol (38.75%) and C. . alcohol (29.5%) the balance being other alkanols.
- Synperonic AZ is a trade mark of ICI Ltd. It is an approx 99% active ethoxylated synthetic primary alcohol with 2 molecules of ethylene oxide.
- Arkopal NO40 is a trade name of Hoescht UK Ltd. It is a approx 99% active alkylphonol ethoxylate with 4 moles of ethylene oxide.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Detergent Compositions (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Materials For Medical Uses (AREA)
Abstract
L'invention concerne un bloc solide de nettoyage de WC, dont la composition comprend (A) de 5 % à 80 % en poids d'un agent tensioactif renfermant un ou plusieurs agents tensioactifs anioniques; (B) de 10 % à 75 % en poids d'un agent de libération de chlore comprenant un ou plusieurs dérivés d'acide cyanurique chloré et agents au chlore; et (C) de 2 à 25 % en poids d'un agent de réglage de la solubilité (selon définition déjà indiquée). La composition contient une quantité ne dépassant pas 20 % en poids de sel inorganique hydrosoluble ajouté avec l'agent tensioactif anionique et ne contient pas d'autres matières d'addition ou diluants.The invention relates to a solid toilet cleaning block, the composition of which comprises (A) from 5% to 80% by weight of a surfactant comprising one or more anionic surfactants; (B) from 10% to 75% by weight of a chlorine releasing agent comprising one or more chlorinated cyanuric acid derivatives and chlorine agents; and (C) from 2 to 25% by weight of a solubility adjusting agent (according to the definition already indicated). The composition contains an amount of not more than 20% by weight of water soluble inorganic salt added with the anionic surfactant and does not contain other additives or diluents.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919108574A GB9108574D0 (en) | 1991-04-22 | 1991-04-22 | Lavatory cleansing blocks |
GB9108574 | 1991-04-22 | ||
PCT/GB1992/000741 WO1992018605A1 (en) | 1991-04-22 | 1992-04-22 | Lavatory cleansing blocks |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0581826A1 true EP0581826A1 (en) | 1994-02-09 |
EP0581826B1 EP0581826B1 (en) | 1995-09-20 |
Family
ID=10693709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92909120A Expired - Lifetime EP0581826B1 (en) | 1991-04-22 | 1992-04-22 | Lavatory cleansing blocks |
Country Status (19)
Country | Link |
---|---|
EP (1) | EP0581826B1 (en) |
JP (1) | JP3420762B2 (en) |
AR (1) | AR244792A1 (en) |
AT (1) | ATE128181T1 (en) |
AU (1) | AU667039B2 (en) |
BR (1) | BR9205926A (en) |
CA (1) | CA2108975C (en) |
DE (1) | DE69204997T2 (en) |
DK (1) | DK0581826T3 (en) |
ES (1) | ES2080497T3 (en) |
GB (2) | GB9108574D0 (en) |
GR (1) | GR3017997T3 (en) |
HK (1) | HK177395A (en) |
IE (1) | IE921217A1 (en) |
MX (1) | MX9201849A (en) |
NZ (1) | NZ242448A (en) |
TW (1) | TW221458B (en) |
WO (1) | WO1992018605A1 (en) |
ZA (1) | ZA922839B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6448410B1 (en) | 2000-01-18 | 2002-09-10 | Albemarle Corporation | Production of compacted biocidal agent from particulate biocidal agent without using a binder |
US6495698B1 (en) | 2000-01-18 | 2002-12-17 | Albemarle Corporation | Binder-free compacted forms of 1,3-dihalo-5,5-dimethylhydantoins |
US6508954B1 (en) | 2000-01-18 | 2003-01-21 | Albemarle Corporation | 1,3-dibromo-5,5-dimethylhydantoin of enhanced properties |
US6565868B1 (en) | 2000-01-18 | 2003-05-20 | Albemarle Corporation | Methods for microbiological control in aqueous systems |
US6638959B2 (en) | 2000-01-18 | 2003-10-28 | Albemarle Corporation | Microbiological control in aqueous systems |
US6680070B1 (en) | 2000-01-18 | 2004-01-20 | Albemarle Corporation | Particulate blends and compacted products formed therefrom, and the preparation thereof |
US6809205B1 (en) | 2000-01-18 | 2004-10-26 | Albemarle Corporation | Process for producing N-halogenated organic compounds |
US7579018B2 (en) | 2000-01-18 | 2009-08-25 | Albemarle Corporation | Microbiological control in aqueous systems |
US7901276B2 (en) | 2003-06-24 | 2011-03-08 | Albemarle Corporation | Microbiocidal control in the processing of meat-producing four-legged animals |
US7999118B2 (en) | 2000-01-18 | 2011-08-16 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5817611A (en) * | 1992-12-03 | 1998-10-06 | Jeyes Group, Plc | Lavatory cleansing blocks |
GB9225338D0 (en) * | 1992-12-03 | 1993-01-27 | Jeyes Group Plc | Lavatory cleansing blocks |
US5578559A (en) * | 1993-05-14 | 1996-11-26 | Block Drug Company, Inc. | Lavatory cleaning block |
GB2300423A (en) | 1995-03-27 | 1996-11-06 | Jeyes Group Plc | Lavatory cleansing |
US6184192B1 (en) * | 1997-04-24 | 2001-02-06 | S. C. Johnson & Son, Inc. | Chlorinated in-tank toilet cleansing block |
DE19721471A1 (en) * | 1997-05-22 | 1998-11-26 | Buck Chemie Gmbh | Active chlorine splitting toilet cleaning block |
US6908636B2 (en) | 2001-06-28 | 2005-06-21 | Albermarle Corporation | Microbiological control in poultry processing |
US6965035B1 (en) | 2002-07-25 | 2005-11-15 | Albemarle Corp | Compacted forms of halogenated hydantoins |
DE102004056554A1 (en) | 2004-11-23 | 2006-05-24 | Buck-Chemie Gmbh | Adhesive sanitary cleaning and scenting agent |
PE20070918A1 (en) | 2005-12-01 | 2007-10-06 | Albemarle Corp | MICROBIOCIDE CONTROL IN THE PROCESSING OF QUADRUPED MEAT-PRODUCING ANIMALS |
AU2018218188B2 (en) * | 2017-02-10 | 2018-12-06 | Wayne Desmond Burgis | Lavatory cleansing block |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2021143B (en) * | 1978-03-21 | 1982-07-28 | Jeyes Group Ltd | Lavatory cleansing tablets |
GB2169612B (en) * | 1984-11-30 | 1989-01-11 | Jeyes Group Ltd | Lavatory cleansing |
GB8515181D0 (en) * | 1985-06-14 | 1985-07-17 | Jeyes Group Ltd | Lavatory cleansing compositions |
AU627170B2 (en) * | 1988-04-13 | 1992-08-20 | Jeyes Limited | Lavatory cleansing blocks |
GB9013539D0 (en) * | 1990-06-18 | 1990-08-08 | Unilever Plc | Lavatory cleansing block |
-
1991
- 1991-04-22 GB GB919108574A patent/GB9108574D0/en active Pending
-
1992
- 1992-04-16 ZA ZA922839A patent/ZA922839B/en unknown
- 1992-04-16 IE IE121792A patent/IE921217A1/en not_active Application Discontinuation
- 1992-04-22 ES ES92909120T patent/ES2080497T3/en not_active Expired - Lifetime
- 1992-04-22 CA CA002108975A patent/CA2108975C/en not_active Expired - Fee Related
- 1992-04-22 AR AR92322185A patent/AR244792A1/en active
- 1992-04-22 BR BR9205926A patent/BR9205926A/en not_active IP Right Cessation
- 1992-04-22 DE DE69204997T patent/DE69204997T2/en not_active Expired - Fee Related
- 1992-04-22 DK DK92909120.5T patent/DK0581826T3/en active
- 1992-04-22 WO PCT/GB1992/000741 patent/WO1992018605A1/en active IP Right Grant
- 1992-04-22 GB GB9321613A patent/GB2270084B/en not_active Expired - Fee Related
- 1992-04-22 MX MX9201849A patent/MX9201849A/en unknown
- 1992-04-22 NZ NZ242448A patent/NZ242448A/en unknown
- 1992-04-22 EP EP92909120A patent/EP0581826B1/en not_active Expired - Lifetime
- 1992-04-22 JP JP50861792A patent/JP3420762B2/en not_active Expired - Fee Related
- 1992-04-22 AU AU19821/92A patent/AU667039B2/en not_active Ceased
- 1992-04-22 AT AT92909120T patent/ATE128181T1/en not_active IP Right Cessation
- 1992-07-18 TW TW081105707A patent/TW221458B/zh active
-
1995
- 1995-11-08 GR GR950403106T patent/GR3017997T3/en unknown
- 1995-11-23 HK HK177395A patent/HK177395A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9218605A1 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6680070B1 (en) | 2000-01-18 | 2004-01-20 | Albemarle Corporation | Particulate blends and compacted products formed therefrom, and the preparation thereof |
US6495698B1 (en) | 2000-01-18 | 2002-12-17 | Albemarle Corporation | Binder-free compacted forms of 1,3-dihalo-5,5-dimethylhydantoins |
US6508954B1 (en) | 2000-01-18 | 2003-01-21 | Albemarle Corporation | 1,3-dibromo-5,5-dimethylhydantoin of enhanced properties |
US6565868B1 (en) | 2000-01-18 | 2003-05-20 | Albemarle Corporation | Methods for microbiological control in aqueous systems |
US6638959B2 (en) | 2000-01-18 | 2003-10-28 | Albemarle Corporation | Microbiological control in aqueous systems |
US6641828B1 (en) | 2000-01-18 | 2003-11-04 | Albemarle Corporation | Methods for microbiological control in aqueous systems |
US6448410B1 (en) | 2000-01-18 | 2002-09-10 | Albemarle Corporation | Production of compacted biocidal agent from particulate biocidal agent without using a binder |
US6809205B1 (en) | 2000-01-18 | 2004-10-26 | Albemarle Corporation | Process for producing N-halogenated organic compounds |
US7579018B2 (en) | 2000-01-18 | 2009-08-25 | Albemarle Corporation | Microbiological control in aqueous systems |
US7999118B2 (en) | 2000-01-18 | 2011-08-16 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
US8586763B2 (en) | 2000-01-18 | 2013-11-19 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
US9029562B2 (en) | 2000-01-18 | 2015-05-12 | Albemarle Corporation | Process for producing N-halogenated hydantoins |
US7901276B2 (en) | 2003-06-24 | 2011-03-08 | Albemarle Corporation | Microbiocidal control in the processing of meat-producing four-legged animals |
Also Published As
Publication number | Publication date |
---|---|
ES2080497T3 (en) | 1996-02-01 |
ATE128181T1 (en) | 1995-10-15 |
CA2108975C (en) | 2001-01-30 |
DE69204997T2 (en) | 1996-04-11 |
GB9108574D0 (en) | 1991-06-05 |
ZA922839B (en) | 1993-01-27 |
DE69204997D1 (en) | 1995-10-26 |
JPH06506711A (en) | 1994-07-28 |
GR3017997T3 (en) | 1996-02-29 |
TW221458B (en) | 1994-03-01 |
NZ242448A (en) | 1994-04-27 |
IE921217A1 (en) | 1992-11-04 |
GB9321613D0 (en) | 1993-12-22 |
AR244792A1 (en) | 1993-11-30 |
DK0581826T3 (en) | 1996-01-08 |
CA2108975A1 (en) | 1992-10-23 |
GB2270084A (en) | 1994-03-02 |
AU667039B2 (en) | 1996-03-07 |
AU1982192A (en) | 1992-11-17 |
WO1992018605A1 (en) | 1992-10-29 |
JP3420762B2 (en) | 2003-06-30 |
EP0581826B1 (en) | 1995-09-20 |
GB2270084B (en) | 1995-05-10 |
MX9201849A (en) | 1992-10-01 |
HK177395A (en) | 1995-12-01 |
BR9205926A (en) | 1994-07-05 |
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